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java.lang.NullPointerException: 	at kodo.jdbc.meta.MetaDataMappingFactory.addExtensions(MetaDataMappingFactory.java:253)	at kodo.jdbc.meta.MetaDataMappingFactory.addMappingExtensions(MetaDataMappingFactory.java:219)	at kodo.jdbc.meta.MetaDataMappingFactory.storeMappings(MetaDataMappingFactory.java:162)	at kodo.jdbc.ide.meta.repos.SavingMappingInfoRepository.save(SavingMappingInfoRepository.java:50)	at kodo.jdbc.ide.meta.repos.IdeMappingRepository.save(IdeMappingRepository.java:259)	at kodo.jdbc.ide.meta.editor.MappingInfoTracker.save(MappingInfoTracker.java:53)	at kodo.jdbc.ide.meta.editor.MappingInfoTracker.save(MappingInfoTracker.java:47)	at kodo.jdbc.ide.meta.editor.MappingEditor.save(MappingEditor.java:161)	at kodo.jdbc.ide.meta.editor.EditingPane.save(EditingPane.java:225)	at kodo.jdbc.ide.meta.editor.EditingPane.access$100(EditingPane.java:24)	at kodo.jdbc.ide.meta.editor.EditingPane$1.actionPerformed(EditingPane.java:84)	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1786)	at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1839)	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)	at javax.swing.AbstractButton.doClick(AbstractButton.java:289)	at javax.swing.AbstractButton.doClick(AbstractButton.java:269)	at javax.swing.plaf.basic.BasicMenuItemUI$ClickAction.actionPerformed(BasicMenuItemUI.java:1073)	at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1530)	at javax.swing.JComponent.processKeyBinding(JComponent.java:2438)	at javax.swing.JMenuBar.processBindingForKeyStrokeRecursive(JMenuBar.java:658)	at javax.swing.JMenuBar.processBindingForKeyStrokeRecursive(JMenuBar.java:666)	at javax.swing.JMenuBar.processBindingForKeyStrokeRecursive(JMenuBar.java:666)	at javax.swing.JMenuBar.processKeyBinding(JMenuBar.java:642)	at javax.swing.KeyboardManager.fireBinding(KeyboardManager.java:253)	at javax.swing.KeyboardManager.fireKeyboardAction(KeyboardManager.java:240)	at javax.swing.JComponent.processKeyBindingsForAllComponents(JComponent.java:2515)	at javax.swing.JComponent.processKeyBindings(JComponent.java:2507)	at javax.swing.JComponent.processKeyEvent(JComponent.java:2401)	at java.awt.Component.processEvent(Component.java:4909)	at java.awt.Container.processEvent(Container.java:1569)	at java.awt.Component.dispatchEventImpl(Component.java:3615)	at java.awt.Container.dispatchEventImpl(Container.java:1627)	at java.awt.Component.dispatchEvent(Component.java:3477)	at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1713)	at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:627)	at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:831)	at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:741)	at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:592)	at java.awt.Component.dispatchEventImpl(Component.java:3506)	at java.awt.Container.dispatchEventImpl(Container.java:1627)	at java.awt.Window.dispatchEventImpl(Window.java:1606)	at java.awt.Component.dispatchEvent(Component.java:3477)	at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)	at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)